Improvement in varnishes or coatings for printers  inking-rolls



' to cleanse them so the inks will not blend.

UNITED STATES PATENT Q-FFICE.

BENJAMIN F. ALLEN, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN VARNISHES 0R COATINGS FOR PRINTERS lNKlNG-ROLLS.

Specification forming part of Letters Patent No. 162,514, dated April27, 1875; application filed April 9, 1875.

To all whom it may concern Be it known that 1, BENJAMIN F. ALLEN, ofBoston, Massachusetts, have invented a new and useful In]provementinGoatingfor Printers Liking-Rollers, of which the following isa clear, full, and exact description My invention relates to rollersused for inking type; and it consistsin aprocess for renewing thesurface, when necessary from any cause. Not only do the surfaces ofthese rollers become worn and need renewing, but it is well known to allprinters that rollers having been used for black ink become worthlesswhen colored ink is to used, as it is impossible To avoid thisdiificulty and renew the surface of the roller is the object of myinvention. To enable others skilled in the art to make and use myinvention, I will proceed to describe the exact manner in which I havecarried it out.

I take the roller, made of any of the wellknown materials, and supposingit to have been used, I wash it as clean as possible. When dry, I applya very thin coating of boiled or burnt oil, preferably linseed-oil,first mixed with a minute quantity of soap to prevent the oil fromdrying hard, and a small quantity of rosin, to give the surface aslightly sticky character. While I use soap and rosin, many otheringredients will readily suggest themselves, which may be used toproduce the desired qualities in the surface of printers roller,qualities well understood by all persons skilled in the art of printing.By this simple process I am enabled readily to form an entirely newsurface on any roller, and it can be repeated as frequently as a newsurface may be required from any cause, thus greatly cheapening theexpense of rollers, as the same rollers thus renewed may be usedcontinuously for a number of years.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The process herein described for renewing the surface of printersrollers by a coating of varnish consisting of boiled oil, soap, andresin, substantially as and for the purpose set forth.

BENJ. F. ALLEN.

Witnesses JAMES STEVENSON, WILL. H. MOXON.

